SU1663529A1 - Device for determining free gas in fluid - Google Patents
Device for determining free gas in fluid Download PDFInfo
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- SU1663529A1 SU1663529A1 SU894706014A SU4706014A SU1663529A1 SU 1663529 A1 SU1663529 A1 SU 1663529A1 SU 894706014 A SU894706014 A SU 894706014A SU 4706014 A SU4706014 A SU 4706014A SU 1663529 A1 SU1663529 A1 SU 1663529A1
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- USSR - Soviet Union
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
Изобретение относитс к измерительной технике и может быть использовано дл определени концентрации пристеночных пузырьков газа в жидкости. Цель изобретени - повышение точности измерени за счет устранени вли ни отраженного от границы раздела сред сигнала. Акустическим матричным решеточным пьезопреобразователем 8 излучают разностную частоту, определ емую двум генераторами 1 и 5 гармонических колебаний. Отраженный сигнал на частоте одного из генераторов несет информацию о рассто нии до границы раздела сред. Измеренное рассто ние управл ет частотой генератора 5 гармонических колебаний так, чтобы при данной разностной частоте и рассто нии на границе раздела сред укладывались две зоны в виде колец Френел , противоположные по фазе. Эхо-сигнал при этом минимален и поэтому сигнал с пьезоприемника 12 несет информацию о концентрации газа в жидкости без погрешности отражени . 4 ил.This invention relates to a measurement technique and can be used to determine the concentration of wall gas bubbles in a liquid. The purpose of the invention is to improve the measurement accuracy by eliminating the influence of the signal reflected from the interface. Acoustic matrix lattice piezoelectric transducer 8 emit a difference frequency determined by two generators 1 and 5 harmonic oscillations. The reflected signal at the frequency of one of the generators carries information about the distance to the interface. The measured distance controls the frequency of the oscillator 5 of harmonic oscillations so that at a given difference frequency and distance at the interface of the media fit two zones in the form of Fresnel rings, opposite in phase. The echo signal is minimal and therefore the signal from the piezoelectric receiver 12 carries information about the concentration of gas in the liquid without reflection error. 4 il.
Description
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Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU894706014A SU1663529A1 (en) | 1989-05-05 | 1989-05-05 | Device for determining free gas in fluid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU894706014A SU1663529A1 (en) | 1989-05-05 | 1989-05-05 | Device for determining free gas in fluid |
Publications (1)
Publication Number | Publication Date |
---|---|
SU1663529A1 true SU1663529A1 (en) | 1991-07-15 |
Family
ID=21454563
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU894706014A SU1663529A1 (en) | 1989-05-05 | 1989-05-05 | Device for determining free gas in fluid |
Country Status (1)
Country | Link |
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SU (1) | SU1663529A1 (en) |
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1989
- 1989-05-05 SU SU894706014A patent/SU1663529A1/en active
Non-Patent Citations (1)
Title |
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Авторское свидетельство СССР N 725014. кл. G 01 N 29/02. 1978. * |
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